A multi-microbial synergistic-nano-carrier coupled in-situ microbial soft foundation rapid reinforcement method

Abstract

The application discloses a kind of multi-microbial flora synergistic-nanocarrier coupling in-situ microbial soft foundation rapid reinforcement method, comprising the following steps: S1, configuration slurry, the slurry includes the calcium-containing loading material suspension of loading repair flora, urea solution and phosphorus source solution;Each liquid in the slurry is configured according to specific ratio;The repair flora includes urease-producing bacteria, exocellular polysaccharide bacteria and phosphorus-solubilizing bacteria;S2, the slurry of step S1 is configured, and is injected into the soft soil foundation to be repaired in the mode of pressure pulse grouting, until the pore filling rate of soft soil foundation is not less than 70%;S3, the soft soil foundation of step S2 is completed grouting is maintained for 30~50 days;When grouting, multiple electrodes are arranged along the depth direction of foundation, and low-frequency alternating electric field is applied.The application has wide application range, can quickly reinforce soft soil foundation, and has higher cementing strength, better permeability and better environmental protection.

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